7000 N Broadway 1-106
Denver, Colorado 80221

Mon - Fri: 7:30AM - 5:00PM

Sat: 8:00AM - 5:00PM

Sun: Closed

95.8% would refer friends and family to us

5 stars Customer since 2016

My service man was on time and professional. I purchased my air conditioner/heating unit from Controlling Systems 7 years ago and have been very happy not only with the product but also the people who have come to maintain it.

4 stars Customer since 2015

Prompt communication and customer service. Furnace seems great. Installers didn't do a very good job of cleaning up after themselves. Lots of misc. wire, screws and debris left after furnace install.They even left some paperwork that they had to come back and pick up a few days later.

5 stars Customer since 2016

Service tech was prompt and courteous and knowledgeable. Very satisfied with service.

4 stars Verified customer

Really happy with the quick response starting with setting up the initial appointment and continuing with arranging the installation. Very friendly and professional. My only wish would have been to get a little more information about the actual model of furnace being installed prior to the installation. I am happy with the decision as I did get the information after asking. Will definitely continue with maintenance with Controlling Systems.

5 stars Customer since 2016

Great company to work with. Professional, on time, don't try to up sell you. I trust them completely.

5 stars Customer since 2015

Bill and the team at Controlling Systems are awesome. We have relied on this firm for over a decade.

5 stars Verified customer

On time. Reasonable price. Worked to find a hot water heater that would fit in a tight space in a 1950 house.

5 stars Customer since 2016

Gus evaluated my system and found an AC solution that I had previously been told was not possible. He was on time, extremely nice and very professional. They were able to schedule the install quickly and I'm very happy with then so far.

5 stars Customer since 2016

Sean was our service representative. Installation was professional. Upon having to readjust he was knowledgeable, courteous and explained the system to our satisfaction. Thanks to all.

5 stars Customer since 2015

Controlling Systems has been taking care of our HVAC and plumbing system needs for over 16 years and has consistently provided the best service and support.